In a world where humans lived in comfort and lived up to 100 years then died...

In a world where humans lived in comfort and lived up to 100 years then died in their sleep, after 100 years of this kind of world would human populations no longer evolve? in your answer reference, darwins postulated mechanisms for evolution by natural selection. what would it mean to say that human populations stopped evolving? And could we use the Hardy Weinberg Analysis in this context?

Expert Solution

Survival of the fittest is the main gist of the natural selection. A world where there is no quest for survival and all the conditions are kept relatively constant ( no climate change, natural disaster) then there won't be any evolution.
The humans will be living to their maximum potential and there will be no need for evolution as they will be cent percent adapted to their world.

One good example is crocodiles. The group crocodyliomorpha originated some 200 mya. Since then, they have reduced in size but they are basically unchanged since the time of dinosaurs (85 mya) .( read some interesting articles related to why crocodiles have stopped evolving and you will be amazed) one of the main reason they have stopped evolving is that they don't need any more modifications for the continuation of their species. They have very good predation stragtegy and also their niche has been very constant in last few millions of years.

So, if the niche is fairly constant and the organism is well adapted to survive in it , it very less likely that it will evolve.
in the picture above I have given logic about how natural selection takes place ( in blue) and why it doesn't apply to the population in the given question ( in red) .

To say that the human population has stopped evolving is saying that no new traits are being selected by the environment and the phenotype is mostly unchanged over time.

hardy- Weinberg equilibrium can be used to study this change. In this equilibrium, if the allele frequency in a given population changes, then there is evolution. However, in non-evolving population this allele frequency remains relatively constant over a period of time

gladiator answered 2 years ago

The following is a theoretical example. You are studying a part of the world where humans...

The following is a theoretical example. You are studying a part of the world where humans have lived for 50 thousand years, but agriculture appeared 7 thousand years ago. You compare mtDNA haplotypes of a) local hunter-gatherer smaples from 10 thousand years ago, b) local modern populations (i.e., people living there today), and c) 10 thousand year old samples of people that lived in the neighboring area where agriculture first originated. You find that local modern population mtDNA haplogroups are...

In 1948, Janet bought a home for $52,000. She lived there until she died in 2018....

In 1948, Janet bought a home for $52,000. She lived there until she died in 2018. When she died her home had a fair market value of $4.8 million. She also had $100,000 in a tax-deductible IRA account. Janet named you in her will as her sole heir and beneficiary. In 2018, how will you treat the deductible IRA account that you receive from Janet? On these facts will Janet's estate pay tax on it? On these facts, will you...

How would you comfort a parent whose infant had died from SIDS? Provide the name of...

How would you comfort a parent whose infant had died from SIDS? Provide the name of a support group in your local area to assist parents and other family members who have lost a baby due to SIDS. 300-350 words

75 million people died in World War 2 spread over 6 years. Right now in the...

75 million people died in World War 2 spread over 6 years. Right now in the World 13 000 people have died due to the pandemic. If the doubling time is 5 days (many people think it will decrease to 3 days) how long before the death toll will be greater than World War 2?

examples of corporations that have not lived up to ethical standards

Search for an outbreak that has occurred anywhere in the world in the last 100 years....

Search for an outbreak that has occurred anywhere in the world in the last 100 years. This will be your topic for discussion for the session, so make sure it is a topic you find interesting! For Week 1, discuss what types of common surveillance and background epidemiology are known about your disease. Here is an example. There are some of the basics you would consider if discussing the Ebola virus outbreak: How many people have it worldwide? How many...

QUESTION 28 Current evidence indicates the first humans infected with HIV lived in a. Haiti b....

QUESTION 28 Current evidence indicates the first humans infected with HIV lived in a. Haiti b. Indonesia c. Africa d. San Francisco 2 points QUESTION 29 If nondisjunction occurs in one chromosome pair in meiosis I during gametogenesis, what will be the result at the completion of meiosis? a. All the gametes will be diploid. b. Half of the gametes will have an extra chromosome, and half will be missing one. c. There will be three extra gametes d....

At a home-and-garden show, randomly selected visitors were asked where they lived and where they normally...

At a home-and-garden show, randomly selected visitors were asked where they lived and where they normally shopped for their garden care products. garden shop discount store supermarket TOTAL Urban 11 20 15 46 Suburban 27 20 12 59 Rural 12 26 24 62 Total 50 66 51 167 [a] Fill in the table with the row percentages of each location category. Garden shop discount store supermarket Urban Suburban Rural [b] Write the null and alternate hypotheses for a test of...

Transmission of pathogens from animals to humans typically occurs in situations where humans are consuming bushmeat,...

Transmission of pathogens from animals to humans typically occurs in situations where humans are consuming bushmeat, illegally trading endangered animals, and/or entering into wild habitats. Why is an understanding of animal diversity and issues of animal trafficking critical not only for the conservation and preservation of animals and natural habitats, but also essential for global human health? Discuss this in terms of COVID 19, Ebola, and AIDS. In your answer include information on the following: a) What vertebrates are believed...

1. In all mammals except for humans physical and chemical digestion begins where? Why are humans...

1. In all mammals except for humans physical and chemical digestion begins where? Why are humans the exception? 2. Write these in the order of innermost (touching digesting food) to outermost (touching the inside of your body) and provide a brief description of each: connective tissue, epithelium, layer of muscle (thin), layer of muscle (thick) submucosa, subserosa, serosa 3. What are segmentation, peristalsis and reverse peristalsis and what is each used for in the body

Question